Bumper paint with silver powder effect and no shielding effect on automobile radar and preparation method

An automotive radar, unshielded technology, applied in coatings and other directions, can solve the problems of radar and bumper chromatic aberration, difficult operation of bumper, poor overall effect, etc., to improve efficiency, save paint, and reduce costs.

Inactive Publication Date: 2019-04-26
DONGLAI COATING TECH SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above scheme brings great operational difficulty to the bumper repair process, not only increases the cost, but also the overall effect after repair is not good, and there will be a certain degree of color difference between the radar and the bumper

Method used

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  • Bumper paint with silver powder effect and no shielding effect on automobile radar and preparation method
  • Bumper paint with silver powder effect and no shielding effect on automobile radar and preparation method
  • Bumper paint with silver powder effect and no shielding effect on automobile radar and preparation method

Examples

Experimental program
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Effect test

preparation example Construction

[0027] The preparation method of bumper paint comprises the following steps:

[0028] (1) Preparation of resin mixture: put wax additives, acrylic resin, modified resin, and amino rheological agent into the reactor, stir at 400-600rpm for 25-30min until uniform, then put CAB and leveling agent into the reactor , 600-800rpm speed dispersion for 25-30min, sampling inspection to make the material fineness less than 15um, finally add solvent to adjust the viscosity to 110-130s (T-4 viscosity cup), and obtain the resin mixture after filtration;

[0029] (2) Prepare mica slurry: mix mica flakes with solvent, stir at 400-600rpm for 10-15min, then soak for 8-10hr to obtain mica slurry;

[0030] (3) Preparation of silver paint products: put the prepared resin mixture into a reaction kettle, add a dispersing aid, stir at a speed of 400-600rpm for 10-15min, then maintain a low shear speed, and add mica slurry to the above-mentioned In the mixed liquid, disperse for 25-30min under stirri...

Embodiment 1

[0033] Preparation of resin mixture A: Take a reaction tank, weigh 23kg of wax additives, 8kg of acrylic resin, 3kg of modified resin, and 5kg of amino rheological agent in sequence with an electronic scale, and disperse at 400-600rpm for 25-30 minutes, then add CAB Put 531-125kg, CAB 381-0.5 20kg, and leveling agent 0.5kg into the reaction tank, disperse for 25-30 minutes at a speed of 600-800rpm, check that the fineness is less than 15μm, add butyl acetate solvent to adjust the viscosity, and filter to obtain resin mixture A ;

[0034] Weigh 7kg of Merck Iriodin 9602 mica pigment, 7kg of butyl acetate, disperse at 400-600rpm for 10-15 minutes, then soak for 8-10 hours to obtain silver mica slurry B;

[0035]Add 0.3kg of dispersant Efka FA 4665 to the resin mixture A, and stir evenly; then maintain a low shear speed, and add silver mica slurry B while stirring; clean the B attached in the container with about 1k butyl acetate solvent, Put it into the reaction tank together, ...

Embodiment 2

[0040] Preparation of resin mixture A: Take a reaction tank, weigh 23kg of wax additives, 8kg of acrylic resin, 3kg of modified resin, and 5kg of amino rheological agent in sequence with an electronic scale, and disperse at 400-600rpm for 25-30 minutes, then add CAB Put 531-125kg, CAB 381-2 20kg, and leveling agent 0.5kg into the reaction tank, disperse for 25-30 minutes at a speed of 600-800rpm, check that the fineness is less than 15μm, add butyl acetate solvent to adjust the viscosity, and filter to obtain resin mixture A ;

[0041] Weigh 7kg of Merck Iriodin 9612 mica pigment, 7kg of butyl acetate, disperse at 400-600rpm for 10-15 minutes, then soak for 8-10 hours to obtain silver mica slurry B;

[0042] Add 0.3kg of dispersant Efka FA 4665 to the resin mixture A, and stir evenly; then maintain a low shear speed, and add silver mica slurry B while stirring; clean the B attached in the container with about 1k butyl acetate solvent, Put it into the reaction tank together, a...

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Abstract

The invention relates to bumper paint with a silver powder effect and no shielding effect on an automobile radar and a preparation method of the bumper paint. The bumper paint is prepared from the following raw materials in parts by weight: 18-28 parts of wax assistant, 6-9 parts of acrylic resin, 2-5 parts of modified polyester, 5-6 parts of amino rheological agent, 40-45 parts of cellulose acetate, 0.2-0.5 parts of flatting agent, 8-10 parts of solvent, 6-9 parts of mica sheet and 0.2-0.5 parts of dispersant. Compared with the prior art, the paint adopts the special mica sheet with the silver powder effect as a pigment and shows various delicate, soft and glittering silver lusters through light reflection and transmission; at the same time, since the raw material is from the pure naturalmica sheet, the special mica sheet has the characteristics of no toxicity, high temperature resistance, acid-base resistance, light resistance, non-conductivity and the like and can completely replace an metal aluminum powder pigment; and the paint has no shielding effect on the automobile radar and can be directly applied to a bumper.

Description

technical field [0001] The invention relates to the field of coatings, in particular to a bumper paint with silver powder effect and no shielding effect on automobile radar and a preparation method thereof. Background technique [0002] In the traditional car bumper paint repair, we will encounter the car radar embedded on the bumper. Once the metal silver powder paint is sprayed in the repair, the radar cannot be used normally. Obviously, the radar will keep beeping when there are no obstacles. Call the police, what caused this? Because the metal silver powder paint is sprayed on the radar probe, the shielding effect of the metal silver powder affects the detection of the radar, which causes the sensitivity of the probe to change and cause a fault. [0003] Therefore, currently in bumper repairs, there are generally three options for the treatment of metallic silver powder paint on radar: one is not to spray paint; The third is to re-purchase radar buttons with similar co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D101/12C09D133/00C09D7/65C09D7/62
CPCC08L2205/025C08L2205/035C09D101/12C09D7/62C09D7/65C09D7/70C08L1/12C08L33/00C08L23/0853C08L61/20C08K9/10C08K7/00C08K3/34C08K3/22C08K13/06
Inventor 朱忠敏刘莉春郭明东
Owner DONGLAI COATING TECH SHANGHAI
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